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  4. [Form 4] Arista Networks, Inc. Insider Trading Activity

Arista Networks (ANET) family trusts sell 573,509 shares under 10b5-1 plan

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Arista Networks, Inc. reported that trusts associated with CEO and Chairperson Jayshree Ullal sold an aggregate of 573,509 shares of common stock on August 12, 2026. The indirect sales were made by multiple family-related trusts, at weighted average prices between $207.00 and $211.37 per share, pursuant to a Rule 10b5-1 trading plan adopted on November 14, 2025. Certain footnoted trusts hold shares for the benefit of the reporting person’s children and other relatives, where she shares voting and investment control but disclaims beneficial ownership, while another family trust lists her as co-trustee. Following these transactions, Ullal also reports 9,917 shares held directly.

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Insider Ullal Jayshree
Role CEO and Chairperson
Sold 573,509 shs ($119.36M)
Type Security Shares Price Value
Sale Common Stock F1, F2, F3 417 $211.3693 $88K
Sale Common Stock F1, F4, F3 9,127 $210.9749 $1.93M
Sale Common Stock F1, F5, F3 1,672 $209.1476 $350K
Sale Common Stock F1, F6, F3 24,325 $208.2931 $5.07M
Sale Common Stock F1, F7, F3 47,029 $207.4275 $9.76M
Sale Common Stock F1, F2, F3 417 $211.3693 $88K
Sale Common Stock F1, F4, F3 9,127 $210.9749 $1.93M
Sale Common Stock F1, F5, F3 1,672 $209.1476 $350K
Sale Common Stock F1, F6, F3 24,325 $208.2931 $5.07M
Sale Common Stock F1, F7, F3 47,029 $207.4275 $9.76M
Sale Common Stock F1, F2, F8 22 $211.3693 $5K
Sale Common Stock F1, F4, F8 496 $210.9749 $105K
Sale Common Stock F1, F5, F8 91 $209.1476 $19K
Sale Common Stock F1, F6, F8 1,321 $208.2931 $275K
Sale Common Stock F1, F7, F8 2,554 $207.4275 $530K
Sale Common Stock F1, F2, F8 22 $211.3693 $5K
Sale Common Stock F1, F4, F8 496 $210.9749 $105K
Sale Common Stock F1, F5, F8 91 $209.1476 $19K
Sale Common Stock F1, F6, F8 1,321 $208.2931 $275K
Sale Common Stock F1, F7, F8 2,554 $207.4275 $530K
Sale Common Stock F9, F7, F10 227,485 $207.4275 $47.19M
Sale Common Stock F9, F6, F10 117,662 $208.2931 $24.51M
Sale Common Stock F9, F5, F10 8,085 $209.1476 $1.69M
Sale Common Stock F9, F4, F10 44,147 $210.9749 $9.31M
Sale Common Stock F9, F2, F10 2,022 $211.3693 $427K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 4,885,920 shares (Indirect, By Trust for Child 1); Common Stock — 4,885,920 shares (Indirect, By Trust for Child 2); Common Stock — 25,000 shares (Indirect, By Trust for Nephew); Common Stock — 25,000 shares (Indirect, By Trust for Niece); Common Stock — 15,988,580 shares (Indirect, by Trust); Common Stock — 9,917 shares (Direct)
Footnotes (10)
  1. F1. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's relatives on November 14, 2025.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $211.36 to $211.37, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  3. F3. These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $210.23 to $211.20, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $209.00 to $209.89, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $208.00 to $208.97, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $207.00 to $207.99, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  8. F8. These shares are held in trust for the benefit of relatives of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.
  9. F9. The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025.
  10. F10. These shares are held by a family trust for which the reporting person is co-trustee.
Total shares sold 573,509 shares Aggregate shares sold indirectly by family-related trusts on August 12, 2026
Lowest sale price range $207.00 to $207.99 per share Weighted average price range disclosed in a sale footnote
Highest sale price range $211.36 to $211.37 per share Weighted average price range disclosed in a sale footnote
Number of sale transactions 25 transactions Non-derivative sale entries summarized in the Form 4 transaction data
Direct holdings after transactions 9,917 shares Common stock held directly by the reporting person after reported trades
Rule 10b5-1 plan adoption date November 14, 2025 Date the trading plan governing these sales was entered into or adopted
Rule 10b5-1 trading plan financial
"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficial ownership financial
"The reporting person shares voting and investment control over the shares but disclaims beneficial ownership"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
indirect ownership financial
"These shares are held in trust for the benefit of the children of the reporting person"

FAQ

What did Arista Networks (ANET) disclose about Jayshree Ullal’s recent stock transactions?
Arista Networks reported that trusts associated with CEO Jayshree Ullal sold 573,509 shares of common stock on August 12, 2026, through multiple indirect transactions at weighted average prices between $207.00 and $211.37 per share.

Were the recent ANET share sales by Jayshree Ullal’s trusts under a Rule 10b5-1 plan?
Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan entered into or adopted on November 14, 2025, for the benefit of the reporting person’s relatives and family trusts.

How many Arista Networks (ANET) shares were sold and at what prices?
Trusts associated with the reporting person sold a total of 573,509 ANET shares. Weighted average sale prices ranged from $207.00 to $211.37 per share, with more detailed price ranges provided in multiple footnotes.

Are the ANET shares in these transactions owned directly by CEO Jayshree Ullal?
No. The disclosed sales involve indirect holdings by family-related trusts. For certain trusts, Ullal shares voting and investment control but disclaims beneficial ownership; another family trust lists her as co-trustee.

How many Arista Networks (ANET) shares does Jayshree Ullal hold directly after these trades?
The Form 4 reports 9,917 ANET shares held in a direct ownership capacity following the reported transactions, separate from the various family and relative trusts that executed the sales.

What types of trusts were involved in the ANET stock sales reported for Jayshree Ullal?
The transactions involve shares held in trust for the benefit of her children, for other relatives including a nephew and niece, and by a family trust where the reporting person is a co-trustee, all classified as indirect ownership.

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Ullal Jayshree
(Last)(First)(Middle)
5453 GREAT AMERICA PARKWAY
(Street)
SANTA CLARA CALIFORNIA 95054
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Arista Networks, Inc. [ ANET ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CEO and Chairperson
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/12/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/12/2026S(1)417D$211.3693(2)4,968,073IBy Trust for Child 1(3)
Common Stock08/12/2026S(1)9,127D$210.9749(4)4,958,946IBy Trust for Child 1(3)
Common Stock08/12/2026S(1)1,672D$209.1476(5)4,957,274IBy Trust for Child 1(3)
Common Stock08/12/2026S(1)24,325D$208.2931(6)4,932,949IBy Trust for Child 1(3)
Common Stock08/12/2026S(1)47,029D$207.4275(7)4,885,920IBy Trust for Child 1(3)
Common Stock08/12/2026S(1)417D$211.3693(2)4,968,073IBy Trust for Child 2(3)
Common Stock08/12/2026S(1)9,127D$210.9749(4)4,958,946IBy Trust for Child 2(3)
Common Stock08/12/2026S(1)1,672D$209.1476(5)4,957,274IBy Trust for Child 2(3)
Common Stock08/12/2026S(1)24,325D$208.2931(6)4,932,949IBy Trust for Child 2(3)
Common Stock08/12/2026S(1)47,029D$207.4275(7)4,885,920IBy Trust for Child 2(3)
Common Stock08/12/2026S(1)22D$211.3693(2)29,462IBy Trust for Nephew(8)
Common Stock08/12/2026S(1)496D$210.9749(4)28,966IBy Trust for Nephew(8)
Common Stock08/12/2026S(1)91D$209.1476(5)28,875IBy Trust for Nephew(8)
Common Stock08/12/2026S(1)1,321D$208.2931(6)27,554IBy Trust for Nephew(8)
Common Stock08/12/2026S(1)2,554D$207.4275(7)25,000IBy Trust for Nephew(8)
Common Stock08/12/2026S(1)22D$211.3693(2)29,462IBy Trust for Niece(8)
Common Stock08/12/2026S(1)496D$210.9749(4)28,966IBy Trust for Niece(8)
Common Stock08/12/2026S(1)91D$209.1476(5)28,875IBy Trust for Niece(8)
Common Stock08/12/2026S(1)1,321D$208.2931(6)27,554IBy Trust for Niece(8)
Common Stock08/12/2026S(1)2,554D$207.4275(7)25,000IBy Trust for Niece(8)
Common Stock08/12/2026S(9)227,485D$207.4275(7)16,160,496Iby Trust(10)
Common Stock08/12/2026S(9)117,662D$208.2931(6)16,042,834Iby Trust(10)
Common Stock08/12/2026S(9)8,085D$209.1476(5)16,034,749Iby Trust(10)
Common Stock08/12/2026S(9)44,147D$210.9749(4)15,990,602Iby Trust(10)
Common Stock08/12/2026S(9)2,022D$211.3693(2)15,988,580Iby Trust(10)
Common Stock9,917D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's relatives on November 14, 2025.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $211.36 to $211.37, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3. These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $210.23 to $211.20, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $209.00 to $209.89, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $208.00 to $208.97, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $207.00 to $207.99, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
8. These shares are held in trust for the benefit of relatives of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.
9. The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025.
10. These shares are held by a family trust for which the reporting person is co-trustee.
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Jayshree Ullal08/14/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR